fix dir creation mode

They need to be writable by owner.

Test: manual
Change-Id: I3e99094e5752c0f6bb351cc24bdf5698b7a4bde2
diff --git a/services/incremental/ServiceWrappers.h b/services/incremental/ServiceWrappers.h
index ae3739d..f0b5672 100644
--- a/services/incremental/ServiceWrappers.h
+++ b/services/incremental/ServiceWrappers.h
@@ -70,7 +70,7 @@
     virtual ~IncFsWrapper() = default;
     virtual ErrorCode makeFile(Control control, std::string_view path, int mode, FileId id,
                                NewFileParams params) const = 0;
-    virtual ErrorCode makeDir(Control control, std::string_view path, int mode = 0555) const = 0;
+    virtual ErrorCode makeDir(Control control, std::string_view path, int mode) const = 0;
     virtual RawMetadata getMetadata(Control control, FileId fileid) const = 0;
     virtual RawMetadata getMetadata(Control control, std::string_view path) const = 0;
     virtual FileId getFileId(Control control, std::string_view path) const = 0;